Improvement in pavements



UNITED XSTATES PATENT GFFICE.

HERMANN A. GNTHER, OF NEW YORK, N. Y.

IMPROVEMENT IN PAVEMENTS.

Specification forming part of Letters Patent No. 120,268, dated October24, 1871.

To all whom t may concern:

Be it known that I, HERMANN A. GUNTHER, of the city, county, and Stateof New York, have invented anew and Improved Concrete Pavement 5 and Ido hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanying drawingforming a part of this specification.

My invention consists in making a concrete pavement or sidewalk,constructed so that it may be taken up in small sections, as hereinafterfully described and subsequently pointed out in the claim.

Figure 1 is a plan, and Fig. 2 a cross-section of a pavement made on mynew plan.

A are blocks of artiiicial stone or concrete, and a represents gum, tar,rubber,`(or other waterrepellant substance,) poured `into the jointsbetween the blocks while said substance is in a molten state.

The eect produced is to form a completely Water-tight joint, while smallsections of the stone may be taken up whenever desired by theapplication of heat to the joints. v

Having thus describedall that is necessary to a full understanding of'the invention, what I esteem to be new, and desire to protect-by LettersPatent, is-

A pavement formed of artificial stones or concrete blocks separated by alling of gum or. other equivalent water-repellant substance capable ofbeing hardened and remelted, substantially as and for the purposespecified.

Witnesses: HERMANN A. GNTHER.

GEO. W. MABEE,

T. B. MosHER.- (110)

